New compact broadband phase shifters using coupled lines

Sang Min Han, Koo Hyung Kwon, Young Sik Kim

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


This paper presents two types of phase shifters using parallel coupled lines as compact and broadband couplers. Phase shifts are enabled by varying the varactor capacitances or by switching the PIN diode ON/OFF. Both have shown about 40% bandwidth within ±3.5° phase error. While an adjustable phase control over 65° is obtained by the phase shifter with varactor diodes, 180° is yielded by that with PIN diodes.

Original languageEnglish
Pages (from-to)399-400
Number of pages2
JournalMicrowave and Optical Technology Letters
Issue number5
Publication statusPublished - 2003 Mar 5


  • Couplers
  • PIN diodes
  • Phase shifters
  • Phased array antennas
  • Varactors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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